The cover of the book 'The Sixth Extinction: Biodiversity and Its Survival' by Richard Leakey and Roger Lewin. The cover features a desert scene with various fossils and artifacts, including a large skull, a fossilized tree, and other ancient remains. The title of the book is prominently displayed at the top, with the subtitle 'Biodiversity and Its Survival' below it. The authors' names are listed at the bottom of the cover.